73 lines
2.8 KiB
Plaintext
73 lines
2.8 KiB
Plaintext
|
MediaTek SCPSYS
|
||
|
|
===============
|
||
|
|
|
||
|
|
The System Control Processor System (SCPSYS) has several power management
|
||
|
|
related tasks in the system. The tasks include thermal measurement, dynamic
|
||
|
|
voltage frequency scaling (DVFS), interrupt filter and lowlevel sleep control.
|
||
|
|
The System Power Manager (SPM) inside the SCPSYS is for the MTCMOS power
|
||
|
|
domain control.
|
||
|
|
|
||
|
|
The driver implements the Generic PM domain bindings described in
|
||
|
|
power/power_domain.txt. It provides the power domains defined in
|
||
|
|
- include/dt-bindings/power/mt8173-power.h
|
||
|
|
- include/dt-bindings/power/mt6797-power.h
|
||
|
|
- include/dt-bindings/power/mt2701-power.h
|
||
|
|
- include/dt-bindings/power/mt2712-power.h
|
||
|
|
- include/dt-bindings/power/mt7622-power.h
|
||
|
|
|
||
|
|
Required properties:
|
||
|
|
- compatible: Should be one of:
|
||
|
|
- "mediatek,mt2701-scpsys"
|
||
|
|
- "mediatek,mt2712-scpsys"
|
||
|
|
- "mediatek,mt6797-scpsys"
|
||
|
|
- "mediatek,mt7622-scpsys"
|
||
|
|
- "mediatek,mt7623-scpsys", "mediatek,mt2701-scpsys": For MT7623 SoC
|
||
|
|
- "mediatek,mt7623a-scpsys": For MT7623A SoC
|
||
|
|
- "mediatek,mt7629-scpsys", "mediatek,mt7622-scpsys": For MT7629 SoC
|
||
|
|
- "mediatek,mt8173-scpsys"
|
||
|
|
- #power-domain-cells: Must be 1
|
||
|
|
- reg: Address range of the SCPSYS unit
|
||
|
|
- infracfg: must contain a phandle to the infracfg controller
|
||
|
|
- clock, clock-names: clocks according to the common clock binding.
|
||
|
|
These are clocks which hardware needs to be
|
||
|
|
enabled before enabling certain power domains.
|
||
|
|
Required clocks for MT2701 or MT7623: "mm", "mfg", "ethif"
|
||
|
|
Required clocks for MT2712: "mm", "mfg", "venc", "jpgdec", "audio", "vdec"
|
||
|
|
Required clocks for MT6797: "mm", "mfg", "vdec"
|
||
|
|
Required clocks for MT7622 or MT7629: "hif_sel"
|
||
|
|
Required clocks for MT7623A: "ethif"
|
||
|
|
Required clocks for MT8173: "mm", "mfg", "venc", "venc_lt"
|
||
|
|
|
||
|
|
Optional properties:
|
||
|
|
- vdec-supply: Power supply for the vdec power domain
|
||
|
|
- venc-supply: Power supply for the venc power domain
|
||
|
|
- isp-supply: Power supply for the isp power domain
|
||
|
|
- mm-supply: Power supply for the mm power domain
|
||
|
|
- venc_lt-supply: Power supply for the venc_lt power domain
|
||
|
|
- audio-supply: Power supply for the audio power domain
|
||
|
|
- usb-supply: Power supply for the usb power domain
|
||
|
|
- mfg_async-supply: Power supply for the mfg_async power domain
|
||
|
|
- mfg_2d-supply: Power supply for the mfg_2d power domain
|
||
|
|
- mfg-supply: Power supply for the mfg power domain
|
||
|
|
|
||
|
|
Example:
|
||
|
|
|
||
|
|
scpsys: scpsys@10006000 {
|
||
|
|
#power-domain-cells = <1>;
|
||
|
|
compatible = "mediatek,mt8173-scpsys";
|
||
|
|
reg = <0 0x10006000 0 0x1000>;
|
||
|
|
infracfg = <&infracfg>;
|
||
|
|
clocks = <&clk26m>,
|
||
|
|
<&topckgen CLK_TOP_MM_SEL>;
|
||
|
|
<&topckgen CLK_TOP_VENC_SEL>,
|
||
|
|
<&topckgen CLK_TOP_VENC_LT_SEL>;
|
||
|
|
clock-names = "mfg", "mm", "venc", "venc_lt";
|
||
|
|
};
|
||
|
|
|
||
|
|
Example consumer:
|
||
|
|
|
||
|
|
afe: mt8173-afe-pcm@11220000 {
|
||
|
|
compatible = "mediatek,mt8173-afe-pcm";
|
||
|
|
power-domains = <&scpsys MT8173_POWER_DOMAIN_AUDIO>;
|
||
|
|
};
|